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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "MediaTrackListener.h"
#include "AudioSegment.h"
#include "VideoSegment.h"
namespace mozilla {
#ifdef LOG
# undef LOG
#endif
#define LOG(type, msg) MOZ_LOG(gMediaTrackGraphLog, type, msg)
void DirectMediaTrackListener::MirrorAndDisableSegment(AudioSegment& aFrom,
AudioSegment& aTo) {
aTo.AppendNullData(aFrom.GetDuration());
}
void DirectMediaTrackListener::MirrorAndDisableSegment(
VideoSegment& aFrom, VideoSegment& aTo, DisabledTrackMode aMode) {
if (aMode == DisabledTrackMode::SILENCE_BLACK) {
for (VideoSegment::ChunkIterator it(aFrom); !it.IsEnded(); it.Next()) {
aTo.AppendFrame(*it, Some(true));
aTo.ExtendLastFrameBy(it->GetDuration());
}
} else if (aMode == DisabledTrackMode::SILENCE_FREEZE) {
aTo.AppendNullData(aFrom.GetDuration());
}
}
void DirectMediaTrackListener::NotifyRealtimeTrackDataAndApplyTrackDisabling(
MediaTrackGraph* aGraph, TrackTime aTrackOffset, MediaSegment& aMedia) {
if (mDisabledFreezeCount == 0 && mDisabledBlackCount == 0) {
NotifyRealtimeTrackData(aGraph, aTrackOffset, aMedia);
return;
}
DisabledTrackMode mode = mDisabledBlackCount > 0
? DisabledTrackMode::SILENCE_BLACK
: DisabledTrackMode::SILENCE_FREEZE;
UniquePtr<MediaSegment> media(aMedia.CreateEmptyClone());
if (aMedia.GetType() == MediaSegment::AUDIO) {
MirrorAndDisableSegment(static_cast<AudioSegment&>(aMedia),
static_cast<AudioSegment&>(*media));
} else if (aMedia.GetType() == MediaSegment::VIDEO) {
MirrorAndDisableSegment(static_cast<VideoSegment&>(aMedia),
static_cast<VideoSegment&>(*media), mode);
} else {
MOZ_CRASH("Unsupported media type");
}
NotifyRealtimeTrackData(aGraph, aTrackOffset, *media);
}
void DirectMediaTrackListener::IncreaseDisabled(DisabledTrackMode aMode) {
if (aMode == DisabledTrackMode::SILENCE_FREEZE) {
++mDisabledFreezeCount;
} else if (aMode == DisabledTrackMode::SILENCE_BLACK) {
++mDisabledBlackCount;
} else {
MOZ_ASSERT(false, "Unknown disabled mode");
}
LOG(LogLevel::Debug,
("DirectMediaTrackListener %p increased disabled "
"mode %s. Current counts are: freeze=%d, black=%d",
this, aMode == DisabledTrackMode::SILENCE_FREEZE ? "freeze" : "black",
int32_t(mDisabledFreezeCount), int32_t(mDisabledBlackCount)));
}
void DirectMediaTrackListener::DecreaseDisabled(DisabledTrackMode aMode) {
if (aMode == DisabledTrackMode::SILENCE_FREEZE) {
--mDisabledFreezeCount;
MOZ_ASSERT(mDisabledFreezeCount >= 0, "Double decrease");
} else if (aMode == DisabledTrackMode::SILENCE_BLACK) {
--mDisabledBlackCount;
MOZ_ASSERT(mDisabledBlackCount >= 0, "Double decrease");
} else {
MOZ_ASSERT(false, "Unknown disabled mode");
}
LOG(LogLevel::Debug,
("DirectMediaTrackListener %p decreased disabled "
"mode %s. Current counts are: freeze=%d, black=%d",
this, aMode == DisabledTrackMode::SILENCE_FREEZE ? "freeze" : "black",
int32_t(mDisabledFreezeCount), int32_t(mDisabledBlackCount)));
}
} // namespace mozilla
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